Manufacture of paper pails



(No Model.)

A.v J J RIi I fiELL.

MANUFACTURE OF PAPER FAILS.

No. 254,127. Patented Feb. 28,1882.

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PATENT OFFICE.

ADELBERT J. GRINNELL, OF DETROIT, MICHIGAN.

MANUFACTURE OF PAPER PAILS.

SPECIFICATION forming part of Letters P atent a... 254,127, dated February as, 1882.

Application filed December 12, 1851. (No model.)

To all whom it may concern: I

Be it known that I, ADELBERT J. Gam- NELL, of Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in the Manufacture of Paper Pails, and I hereby declare that the following is a full, clear, and exact description thereof,

reference being had to the accompanying drawings, which form a part of this specification.

The nature of this invention relates to certain new and useful improvements in the construction of a former upon which to form by a rolling process the shell or body of apail, or other vessel wherein the diameter is larger at one end than the other, of pulp.

The invention consists in the former being made of staves, each alternate one being rigid and immovable, while the intermediate ones are adapted to be partially withdrawn, whereby the paper shell may be easily and readily removed t'roni the former.

Figure 1 is a perspective showing the device ready for use, and in dotted lines the intermediate staves partially withdrawn. Fig. 2 is a vertical central section.

In the accompanying drawings, which form a part of this specification, A represents the head of -the device, which may be of any desired diameter, and B the bottom thereof, which is of a lesser diameter, and these heads are detachably securedto the shaft 0 by means of set-screws a, orin any other convenient manner.

Dis an intermediate head, and E an intermediate bottom, sleeved uponthe shaft 0. To the head A and bottom 13 is rigidly secured a series of staves F, there being a space left'between each two adjoining staves of suffieient width to insert another series of staves, G, which are secured in such spaces to the intermediate head, D, and bottom E.

To the intermediate head, D, there is secured two ears, I), which project upward through the head A, and to the free ends of these cars is secured the ball 0, by means of which the in termediate head, D, and bottom E, with the staves secured thereto, may be partially withdrawn by a reciprocating movement in the shaft 0, and as shown in dotted lines in Fig.1.

In operation the pulp is drawn from the vat in any convenient manner and discharged in a thin sheet upon the face of a belt. The former above described isrotated upon the pulp in the belt a sufiicient numberof times to take up a sufficient quantity of pulp from the belt as may be required to give a proper thickness 'to the body of the vessel being made. As soon as this is done the formeris removed from the belt, the intermediate staves are partially withdrawn, as shown, so that the close adhesion between the pulp and the outer face of the former is broken. Then the former is raised to an upright position and a slight blow given to the lower end of the shaft, when the shell of the implement will drop from the former, and at the same time the partially-removed staves will fall to their original position, when the device is ready for another of the above-described operations.

I am aware that it is not new to form the body of a pulp-paper pail upon a solid shell by the rolling process, consequently do not claim such solid shell or the process of formingpaper-pulp vessels broadly; but

What I do claim as my invention is- 1. A rolling former wherein one-half of the staves used are secured to one holding device, and the remaining staves to a separate holding device, whereby each alternate stave is adapted to be partially removed, substantially as and for the purpose specified.

. 2. Aroller-former for the purposes setforth, consisting of a fixed head and bottom secured to a centrahshaft, and with rigidly-secured staves, intermediate head and bottom, with staves secured thereto, such intermediate head and bottom having a limited reciprocating motion upon the shaft, substantially as and for the purposes specified.

3. A roller-former for the purposes set forth, consisting of the head A, bottom B, and staves F, the intermediate head, D, bottom E, and staves G, in combination with the shaft 0, and means, substantially as described, for reciprocating the parts D E upon the shaft, substantially as and for the purposes set forth.

ADELBERT J. GRINNELL. NVitnesses:

H. S. SPRAGUE, R-lcm). TREGAsKEs. 

